The neutron's electric form factor contains vital information on nucleon structure, but its interpretation within many models has been obscured by relativistic effects. I demonstrate that, to leading order in the relativistic expansion of a constituent quark model, the Foldy term cancels exactly against a contribution to the Dirac form factor $F_1$ to leave intact the naive interpretation of $G_E^n$ as arising from the neutron's rest frame charge distribution.

• Received 11 January 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.272